Hearing aid



FIG. 1 is a side view of a behind-the-ear (“BTE”) component and a rear perspective view of an in-ear component of the hearing aid;

FIG. 2 is a rear view of the BTE component and a side perspective view of the in-ear component of the hearing aid;

FIG. 3 is another side view of the BTE component and a front perspective view of the in-ear component of the hearing aid;

FIG. 4 is a front view of the BTE component and a top perspective view of the in-ear component of the hearing aid;

FIG. 5 is a bottom view of the BTE component and a bottom perspective of the in-ear component of the hearing aid;

FIG. 6 is a top view of the BTE component and a side perspective of the in- ear component of the hearing aid; and,

FIG. 7 is a perspective view of the BTE component and a side perspective view of the in-ear component of the hearing aid. 

The ornamental design for a hearing aid, as shown and described. 